function setCookie(name, value, iDay) {
    var oDate = new Date()
    oDate.setDate(oDate.getDate() + iDay)
    const cookie = name + '=' + value + ';expires=' + oDate+';path=/'
    document.cookie = cookie
}

function getCookie(name) {
    var arr = document.cookie.split('; ')
    for (var i = 0; i < arr.length; i++) {
        var arr2 = arr[i].split('=')
        if (arr2[0] === name) {
            return arr2[1]
        }
    }
    return ''
}

function removeCookie(name) {
    setCookie(name, 1, -1)
}